OPT: apply_transfo: removed check for file existence (done by parser)
OPT: apply_transfo: removed check for file existence (done by parser)

Former-commit-id: 5fdfe542fa24ebb3a9e856bb69311f01501b0df3 [formerly 724a6f6e1f5bdaa76729bdeb157ff7cf5e9aa281]
Former-commit-id: 538f5dda5cabfbd142c6015eaa4e2e34030d3f90
Former-commit-id: e8edb84fcaed2d3ace4ab36cd921a3b957ddb1c8
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox